C# 一个将秒转换为时间的函数

public string getClock(int sec)
{
int day = 0, hour = 0, min = 0;
min = sec / 60;
sec = sec % 60;
hour = min / 60;
min = min % 60;
day = hour / 24;
hour = hour % 24;
return string.Format("{0}天{1:00}小时{2:00}分{3:00}秒", day, hour, min, sec);
}